15 Unreal Natural Wonders You Have to See to Believe
13. The Blue Volcano of Kawah Ijen, Indonesia – A Fire That Burns Electric Blue
At first glance, Kawah Ijen in Indonesia looks like a normal volcano—until night falls. Unlike traditional lava, which glows red and orange, this volcano erupts with electric blue flames that spill down the mountainside in surreal, glowing rivers. The eerie blue fire isn’t actually lava; it’s the result of burning sulfuric gases that ignite upon contact with the air, creating an otherworldly neon glow. The sight of ghostly blue flames flickering against the night sky is a rare and unforgettable spectacle—one that few travelers ever witness in person.
